{
  "request": {
    "method": "POST",
    "url": "https://my-store.swell.store/api/cart/items",
    "headers": {
      "Authorization": "pk_test_abcd1234"
    },
    "body": {
      "product_id": "65d0b1a5f7d9d80012a1b2c3",
      "quantity": 2,
      "options": [
        { "name": "Size", "value": "M" },
        { "name": "Color", "value": "Indigo" }
      ]
    }
  },
  "response": {
    "status": 200,
    "body": {
      "id": "65d0b211f7d9d80012a1b3aa",
      "status": "active",
      "items": [
        {
          "id": "65d0b212f7d9d80012a1b3ab",
          "product_id": "65d0b1a5f7d9d80012a1b2c3",
          "quantity": 2,
          "price": 49.0,
          "price_total": 98.0
        }
      ],
      "sub_total": 98.0,
      "tax_total": 0,
      "grand_total": 98.0,
      "currency": "USD"
    }
  }
}